Question details

Error lights on S700 modules

Hello !

An error appeared with deported modules on my PLC. There are red lights on "ch-err1" and "ch-err2". But in Control Builder, there is no error. And on a secund deported rack, I don't have this error (Cf photos).

The two racks have the same supply (already check, it delivers the good supply).

Answers

best part in your case, compare non-error slave DC705F and AI/AO 723F module configuration with slave having error.

In HW tree you can double click on modules and can check configuration. e.g.

For DC 705F , check user tab > Error LED/Failsafe Function selection, Also check supply and detect short-circuit. Incase you are not using few channels will be detected as open circuit and due to that you get group error led ON. Same applies to I/O modules.

But in I/O modules user gets option to configure for each channel not in use, so I recommend to compare first with healthy slave configuration and select not in use for both channel configuration and check if that works. Also read through S700 I/O module M&I manual doc number 2PAA109294.